This was 14 inches on the northwest side of the home.
Furnace flue height above roof.
See the detailed b vent chimney rooftop clearance table below.
Below are some requirements for the furnace water heater single wall vent pipe chimney warm climate.
Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.
Chimney chimney flue must terminate min.
The top of a chimney pipe must extend at least 2 feet above the peak of the roof if the pipe is within 10 feet of the peak.
A type b w gas vent shall terminate not less than 12 feet in.
Feet 1524 mm in vertical height above the highest connected appliance draft hood or flue collar.
Height of furnace vent above grade this is an exhaust vent for a high efficiency furnace.
Most wood stove and factory built fireplace manufacturers and local building codes will require that the chimney must extend at least 2 feet above any portion of any structure within 10 feet measured horizontally and must extend at least 3 feet above the highest point of its roof penetration.
If the pipe is farther than 10 feet from the roof peak it must be 2.
2 higher than building withing 10.
Chimney chimney flue must terminate min.
A vertical line drawn along the up roof side of the chimney from the roof surface to the top of the chimney flue opening shall be at least 3 ft in height.
Well making sure that you choose the right venting style will protect them.
The top of the flue opening should be 3 ft 0 92 m above any roof surface.
11 12 to 12 12 4 0 feet above the roof surface continues to 21 12 pitch at 8 0 feet vent caps larger than 12 must be located at least 2 feet above the highest point and 2 feet higher than any portion of the building within a horizontal distance of 10 feet.
As a rule of thumb is there a min height requirement above grade in areas with heavy snow fall.
The top of the chimney should be at least two feet above anything within a ten foot radius of the chimney.
For a gas vent or type l vent this height must be 2 ft 0 61m or more.
2 above the roof.
The different types of venting.
Nfpa54 12 7 2 2 802 6 2 2 type b w vents.
Except for flat and very low slope roofs such as those listed in the table below b vents should be at least two feet above the roof surface as well.